hypophoria

hypophoria /hy·po·pho·ria/ (-for´e-ah) downward deviation of the visual axis of one eye in the absence of visual fusional stimuli.

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hy·po·pho·ri·a (hp-fôr-)

n.

A tendency of the visual axis of one eye to sink below that of the other.

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hypophoria

[-fôr′ē·ə]

a type of strabismus in which the patient may not show signs of ocular muscle imbalance until the affected eye is covered, resulting in a downward deviation. Otherwise the central nervous system may attempt to compensate for the defect through a fusion of the images received from both of the eyes.

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hypophoria

permanent downward deviation of the visual axis of an eye in the absence of visual fusional stimuli. Called also heterophoria.

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hyperphoria

The tendency for the line of sight of one eye to deviate upward relative to that of the other eye, in the absence of an adequate stimulus to fusion. If the deviation tends to be downward relative to the other eye or if the other eye in hyperphoria is used as a reference, the condition is called hypophoria. See kataphoria.
left hyperphoria (L/R) Hyperphoria in which the line of sight of the left eye deviates upward relative to the other eye.
paretic hyperphoria Hyperphoria due to a paresis of one or several of the extraocular muscles.
right hyperphoria (R/L) Hyperphoria in which the line of sight of the right eye deviates upward relative to the other eye.